Dual tube container with one way valves and applicator

Abstract

A dual tube container with one way valves comprises an outer tube and a cap, wherein, the tube head of the outer tube is provided with a base plate; the base plate is provided with a left through hole and a right through hole connecting the outer tube and the inner tube; a connector extends downwards from the right through hole, and the inner tube body in the outer tube body is connected to the connector to form the inner tube; a pair of one way valves are fixed in the tube head; an applicator with a orifice is inserted into the tube head; when the cap is put on to close the tube head, the pintle or elastic gasket in the cap sealing the orifice on the daub part of the applicator to prevent the leaking of liquid contents. It is provided with a pair of one way valves, and the inner tube is fixed in the outer tube; via the opening or closing of the pair of one way valves, the contents of the outer tube and the inner tube are permitted or forbidden to flow out. By using the dual tube container to make a cosmetic apparatus, etc., the technology of filling two kinds of pastes can be implemented via the big holes in the tube head, so as to avoid adopting expensive special equipment for filling and sealing; the operation is greatly simplified, and the cost is reduced.

1. A dual tube container comprising:
 an outer tube comprising:
 an outer tube body having an outer tube interior chamber; and, 
 an inner tube comprising an inner tube body having an inner tube interior chamber; 
 
 a tube head comprising:
 a base plate having a left through hole communicating with the outer tube interior chamber, and a right through hole communicating with the inner tube interior chamber; and, 
 a connector joining the inner tube body, the connector being adjacent the right through hole and extending downward from the base plate; 
 
 an applicator inserted into the tube head, the applicator comprising:
 an applicator interior chamber; 
 a separator vertically fixed within the applicator interior chamber, the separator dividing the applicator interior chamber into a left channel and a right channel; 
 a fixing part; and, 
 a daub part with at least one orifice; 
 
 a pair of one way valves fixed on the base plate, the pair of one way valves each separately corresponding to the left through hole and to the right through hole, the pair of one way valves comprising:
 a valve seat, having a bottom surface provided with a left guide hole and a right guide hole with a plug extending downwards from the right guide hole, the plug inserted into the right through hole of the base plate; and, 
 a flexible valve plate, the flexible valve plate attached to an upper surface of the left guide hole and an upper surface of the right guide hole and the flexible valve plate attached to the bottom surface of the valve seat, a middle of the valve plate compacted by a lower end of the separator, a left end part and a right end part of the valve plate open when inner tube contents or outer tube contents are dispensed; 
 
 a cap comprising a pintle located within the cap, the pintle sealing the at least one orifice of the daub part to prevent the leaking of liquid contents when the cap is attached to the tube head. 
 
     
     
       2. The dual tube container of  claim 1 , the daub part further comprising a daub tip which comprises the at least one orifice of the daub part, the at least one orifice communicating with the left channel or the right channel. 
     
     
       3. The dual tube container of  claim 1 , wherein the inner tube body is located within the outer tube body and the inner tube body is snapped to the connector to close the inner tube. 
     
     
       4. The dual tube container of  claim 1 , wherein an internal thread at an internal lower opening of the cap is screwed to an external thread of the tube head and the pintle seals the at least one orifice of the daub part to prevent the leaking of the liquid contents. 
     
     
       5. The dual tube container of  claim 1 , wherein the daub part is a slanted shape having a slanting daub tip comprising the at least one orifice which are multiple orifices sealed by a dual cap. 
     
     
       6. The dual tube container of  claim 5 , wherein the cap further comprises an outer cap and a rotatable inner cap having a barrel-shaped shell and a slanting plate located at a barrel-shaped shell interior chamber, and an elastic gasket or multiple pintles attached to a lower surface of the slanting plate for sealing the corresponding multiple orifices. 
     
     
       7. The dual tube container of  claim 1 , wherein the tube head, the base plate, and the connector compose a single unitary monolithic plastic component made by injection molding or compression molding. 
     
     
       8. The dual tube container of  claim 7 , wherein the inner tube body is located within the outer tube body and the inner tube body is snapped to the connector to close the inner tube. 
     
     
       9. The dual tube container of  claim 7 , wherein an internal thread at an internal lower opening of the cap is screwed to an external thread of the tube head and the pintle seals the at least one orifice of the daub part to prevent the leaking of the liquid contents.